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Vocabulary
Theorems
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Blast From The Past
Random Facts
100
This is the definition of a "triangle".
What is a polygon with three sides?
100
The Triangle Sum Theorem states that the sum of the measures of the interior angles of a triangle is this.
What is 180 degrees?
100
To prove triangle DBA congruent to triangle BDC.
What is SSS?
100
This is the formula for finding the area of a triangle.
What is A=(1/2)bh
100
The winter solstice occurs on this date.
What is December 21?
200
A hypotenuse is the longest side of this type of triangle.
What is a right triangle?
200
The Exterior Angles Theorem states that the measure of an exterior angle of a triangle is equal to this.
What is the sum of the measures of the two nonadjacent interior angles?
200
To prove triangle XYZ congruent to triangle BAZ.
What is SAS?
200
This is the result of the intersection of two planes.
What is a line?
200
Name two Holidays that land on the same day of the week every year.
What are Thanksgiving and Easter (Good Friday is also an option)?
300
This is a statement that can be proved very easily using a theorem.
What is a corollary?
300
Name the theorem: If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.
What is the Third Angles Theorem?
300
To prove triangle ADC congruent to triangle CBA
What is HL?
300
This is the contrapositive of a conditional statement.
What is the negation of the converse?
300
During the Renaissance, Copernicus proposed and provided evidence for this astronomical model, which was very controversial at the time.
What is the earth revolving around the sun?
400
These are the two definitions for an isosceles triangle.
What are "a triangle with at least 2 congruent sides" and "a triangle with at least 2 congruent angles"?
400
These are the three criteria needed to use the HL Congruence Theorem.
What is congruent hypotenuse, congruent leg, and right triangles?
400
To prove triangle ABC congruent to triangle EDC.
What is ASA or AAS?
400
The Transitive Property of Parallel Lines states this.
What is if line A is parallel to line B and line B is parallel to line C, then line A is parallel to line C?
400
The Large Hadron Collider in Switzerland as built by this organization.
What is CERN?
500
Proving two triangles are congruent is very powerful because it proves all of these are congruent.
What are corresponding parts?
500
Name the theorem: If two angles of a triangle are congruent, then the sides opposite them are congruent.
What is the Converse of Base Angles Theorem?
500
To prove triangle AED congruent to triangle BEC.
What is ASA?
500
In a plane, if two lines are perpendicular to the same line, then we can make this conclusion.
What is the two lines are parallel?
500
My dog is named after this hockey legend.
Who is Gordie Howe?